63947455 has 32 divisors (see below), whose sum is σ = 95473728. Its totient is φ = 40396800.

The previous prime is 63947453. The next prime is 63947467. The reversal of 63947455 is 55474936.

It is not a de Polignac number, because 63947455 - 2¹ = 63947453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63947453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9525 + ... + 14785.

It is an arithmetic number, because the mean of its divisors is an integer number (2983554).

Almost surely, 2^63947455 is an apocalyptic number.

63947455 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

63947455 is a deficient number, since it is larger than the sum of its proper divisors (31526273).

63947455 is a wasteful number, since it uses less digits than its factorization.

63947455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5307.

The product of its digits is 453600, while the sum is 43.

The square root of 63947455 is about 7996.7152631565. The cubic root of 63947455 is about 399.8905012778.

The spelling of 63947455 in words is "sixty-three million, nine hundred forty-seven thousand, four hundred fifty-five".